Stairmaster STEPMILL 7000 PT - Page 52

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TROUBLESHOOTING THE ELECTRICAL SYSTEM
Disconnect the main cable connector at the J1 position of the relay
assembly circuit board. Check the VDC reading at the silver tabs on
the relay assembly circuit board. Tab #4 (labelled t/WHD is positive
and tab #5 (labelled GND/BLK) is negative (refer to Wiring Diagram
2). You should get a reading between 15 and 17 VDC . If your reading
is not within the range , replace the relay assembly circuit board and
retest.
c. If you are getting the correct voltage at tabs #4 and #5, check the
VDC reading at the connector labelled position J1 on the relay
assembly circuit board. Pin #4 is positive and pin #5 is negative . You
should get a reading between 15 and 17 VDC. If your reading is not
within the range , replace the relay assembly circuit board and
retest.
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5.
d. If all of the above power tests produce VDC readings that are within
range and the Power ind i cator light is still not lit, the Power
indicator light is probably inoperable. Replace the relay assembly
circuit board and retest.
Ensure that all of the wires you disconnected in steps 5a-5c are securely
reconnected . Remove the console and disconnect the console cable . Use a DC
voltmeter to measure the VDC at pin #9 (positive) and pin #1 (negative) of the
console cable connector . You should get a reading between 15 and 17 VDC . If
the reading is not within the range , replace the cable assembly and retest.
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6. If the problem still exists , contact the Customer Serv i ce Department at
StairMast
er
<8l Sports/Medical Products , Inc.
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